Question

Consider the turbocharger of an internal combustion
engine. The exhaust

gases enter the turbine at 450 °C at a rate of 0.02 kg/s and leave
at 400 °C. Air

enters the compressor at 70 °C and 95 kPa at a rate of 0.018 kg/s
and leaves

at 135 kPa. The mechanical efficiency between the turbine and
the

compressor is 95 percent (5 percent of turbine work is lost during
its

transmission to the compressor). Using air properties for the
exhaust gases,

determine (a) the air temperature at the compressor exit and (b)
the isentropic

efficiency of the compressor.

Answer #1

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